<template>
    <div class="bgView">
      <div :class="['json-view', length ? 'closeable' : '']" :style="'font-size:' + fontSize + 'px'">
        <span @click="toggleClose" :class="['angle', innerclosed ? 'closed' : '']" v-if="length"> </span>
        <div class="content-wrap">
          <p class="first-line">
            <span v-if="jsonKey" class="json-key">"{{ jsonKey }}": </span>
            <span v-if="length">
              {{ prefix }}
              {{ innerclosed ? '...' + subfix : '' }}
              <span class="json-note">
                {{ innerclosed ? ' // count: ' + length : '' }}
              </span>
            </span>
            <span v-if="!length">{{ isArray ? '[]' : '{}' }}</span>
          </p>
          <div v-if="!innerclosed && length" class="json-body">
            <template v-for="(item, index) in items">
              <json-view
                :closed="closed"
                v-if="item.isJSON"
                :key="index"
                :json="item.value"
                :jsonKey="item.key"
                :isLast="index === items.length - 1"
              ></json-view>
              <p class="json-item" v-else :key="index">
                <span class="json-key">
                  {{ isArray ? '' : '"' + item.key + '"' }}
                </span>
                :
                <span class="json-value">
                  {{ item.value + (index === items.length - 1 ? '' : ',') }}
                </span>
              </p>
            </template>
            <span v-show="!innerclosed" class="body-line"></span>
          </div>
          <p v-if="!innerclosed && length" class="last-line">
            <span>{{ subfix }}</span>
          </p>
        </div>
      </div>
    </div>
</template>
<script>
export default {
  name: 'jsonView',
  props: {
    json: [Object, Array],
    jsonKey: {
      type: String,
      default: '',
    },
    
    isLast: {
      type: Boolean,
      default: true,
    },
    fontSize: {
      type: Number,
      default: 13,
    },
  },
  created() {
    this.innerclosed = this.closed
    this.$watch('closed', () => {
      this.innerclosed = this.closed
    })
  },
  data() {
    return {
      innerclosed: true,
      closed:true,
    }
  },
  methods: {
    doOpen() {
      this.closed = false
      this.closed = true
      this.innerclosed = this.closed
      this.$watch('closed', () => {
        this.innerclosed = this.closed
      })
    },
    isObjectOrArray(source) {
      const type = Object.prototype.toString.call(source)
      const res = type === '[object Array]' || type === '[object Object]'
      return res
    },
    toggleClose() {
      if (this.innerclosed) {
        this.innerclosed = false
      } else {
        this.innerclosed = true
      }
    },
  },
  computed: {
    isArray() {
      return Object.prototype.toString.call(this.json) === '[object Array]'
    },
    length() {
      return this.isArray ? this.json.length : Object.keys(this.json).length
    },
    subfix() {
      return (this.isArray ? ']' : '}') + (this.isLast ? '' : ',')
    },
    prefix() {
      return this.isArray ? '[' : '{'
    },
    items() {
      if (this.isArray) {
        return this.json.map((item) => {
          const isJSON = this.isObjectOrArray(item)
          return {
            value: isJSON ? item : JSON.stringify(item),
            isJSON,
            key: '',
          }
        })
      }
      const json = this.json
      let temp = Object.keys(json).map((key) => {
        const item = json[key]
        const isJSON = this.isObjectOrArray(item)
        return {
          value: isJSON ? item : JSON.stringify(item),
          isJSON,
          key,
        }
      })
      return Object.keys(json).map((key) => {
        const item = json[key]
        const isJSON = this.isObjectOrArray(item)
        return {
          value: isJSON ? item : JSON.stringify(item),
          isJSON,
          key,
        }
      })
    },
  },
}
</script>
 
<style>
.bgView {
  background-color: #fafafa;
}
.json-view {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  white-space: nowrap;
  padding-left: 20px;
  box-sizing: border-box;
}
.json-note {
  color: #909399;
}
.json-key {
  color: rgb(147, 98, 15);
}
.json-value {
  color: rgb(24, 186, 24);
}
.json-item {
  margin: 0;
  padding-left: 20px;
}
.first-line {
  padding: 0;
  margin: 0;
}
.json-body {
  position: relative;
  padding: 0;
  margin: 0;
}

.json-body .body-line {
  position: absolute;
  height: 100%;
  width: 0;
  border-left: dashed 1px #bbb;
  top: 0;
  left: 2px;
}
.last-line {
  padding: 0;
  margin: 0;
}
.angle {
  position: absolute;
  display: block;
  cursor: pointer;
  float: left;
  width: 20px;
  text-align: center;
  left: 0;
}
.angle::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  vertical-align: middle;
  border-top: solid 4px #333;
  border-left: solid 6px transparent;
  border-right: solid 6px transparent;
}
.angle.closed::after {
  border-left: solid 4px #333;
  border-top: solid 6px transparent;
  border-bottom: solid 6px transparent;
}
</style>
